Academic Systems
Produces multimedia instruction software for mathematics and English. Interactive Mathematics includes integrated animation, graphics, audio, and video; individualized student programs; an array of help and support options; and an online reporting system
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The Academy of Natural Sciences
Founded in 1812, The Academy of Natural Sciences of Philadelphia is the oldest science research institution in the Western Hemisphere and a world leader in the fields of natural science research, education and exhibition. This site contains on-line exhibits,
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ACalculator.com
Hundreds of online financial and unit conversion calculators available for installation on your own website, where your customers can carry out calculations on their own, with transparency.
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achieve.org - Achieve, Inc.
A site for information on state progress in raising expectations for all students, with a searchable database of the academic standards from most states in math, English, science, and history/social studies and sample assessment questions, student work,
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achievethecore.org - Student Achievement Partners
Professional development modules, voices of teachers, articles, tools, research, and other free resources for educators implementing the Common Core State Standards, as assembled by the American Federation of Teachers (AFT), the National Education Association
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A+ Click K-12 Math Quiz
A+ Click is a free online math quiz. Assess your math skills from grade 1 to grade 12; you may move up a level if you give 5 correct answers in a row. Also available in Russian.
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ACME Klein Bottles - Cliff Stoll
"Searching for a one-sided surface? Need a zero-volume bottle? Want the ultimate in non-orientability? Get an ACME Klein bottle!" Available in several different models, including classical, Erlenmeyer flask, sliced, spiral, "weirdies," and special designs.
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ActiveMath Workshops - Northbrook, IL
ActiveMath provides personalized, hands-on teacher workshops for teachers of grades K-12. The workshops specialize in teaching mathematics for understanding, while making strong connections to other disciplines and to the real world. Graduate credit
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ActivePrompt - David Wees
"A different framework for gathering information about what your class understands": upload an image, key in a prompt (e.g., "Where does circle number 5 go?"), and ActivePrompt combines them into an interactive poll to canvas your students. By aggregating
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Adaptech Research Network - University of Toronto
A services and a research and development centre that focuses both on solutions for persons with disabilities, and on universal design. The site includes the Vision Technology Service (sight enhancement and substitution clinic), a technical glossary (covering
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Addison-Wesley Higher Education - Pearson Education
Publisher of programs and materials for primary and secondary school students and teachers; higher education textbooks and multimedia in major academic subjects for students and professors; books and multimedia for business professionals, practicing engineers,
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The Addventures of Plusman - Michael Cherry
Math puns, wordplay and illustrated concepts, all in a comic book format. The first of the Plusman series introduces Adam Tegetter, Aidee DeGrangle, Hex A. Hedron, the evil Dr. Nein and the origin of Plusman and the Permutation; the second tells of the
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Adults Learning Mathematics (ALM)
An international research forum bringing together researchers and practitioners in adult mathematics/numeracy teaching and learning in order to promote the learning of mathematics by adults. Biannual listing for researchers, practitioners in adult mathematics/numeracy
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Advanced Data Visualization - Principia Mathematica
PM-Visualization Studio is a Microsoft Windows 95, 98 or NT application that takes the Visualization Toolkit (Vtk) data visualization architecture and extends it by providing a graphical pipeline editor. It also includes an Active X control that allows
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AdventureOnline.com - Learning Outfitters, Inc.
Interdisciplinary curricula that use the Web to connect students to expeditions from around the world, creating motivating, real-time materials for K-12 classrooms. Thematic content includes traditional and online lessons, games, quizzes, research stations,
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Adventures in Teaching - Darryl Yong
Blog "about the intellectually and emotionally demanding work of teaching" by a professor of mathematics at Harvey Mudd College. The director of the Claremont Colleges Center for Teaching and Learning, Yong began the blog in 2009 as a way to journal his
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Adventures in the MathZone - Ivars Peterson (MathTrek)
Ivars Peterson and his wife, Nancy Henderson, have written "a book that introduces children to a variety of ideas also of interest to today's mathematicians: knots, map coloring, Möbius strips and topology, prime numbers, chaos, fractals, and more. Our
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The Aerobie® Flying Ring - Alan Adler
A scientific paper by the inventor of the Aerobie® flying ring: "The most difficult aspect of the design task is that the disc must fly over a wide range of α (angle of attack).... A conventional Frisbee disc partially accomplishes this by employing
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